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Explanation of Some Terms in Option Trading

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    bond

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    指在option交易中,期权义务方必须按照规则缴纳的金额。维持保证金每日进行计算。[/li]
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    保证金催缴

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    指在期权义务方的保证金水平低于维持保证金时,通知其增加保证金。[/li]
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    保证金风险

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    指投资者在卖出开仓后,需要时刻保证足额的保证金,否则会遭到强行平仓的风险。[/li]
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    备兑开仓

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    指在拥有足额标的证券的基础上,卖出相应数量的认购期权合约。[/li]
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    比率价差策略(Ratio Spread)

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    指买入一定数量的期权,同时卖出更多数量的期权。买入的期权与卖出的期权具有相同合约标的和到期日,但行权价不同。[/li]
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    标的证券

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    又称合约标的,指期权合约规定的双方买入或卖出的资产,为期权所对应的标的资产。个股期权对应的标的证券就是对应的股票或ETF。[/li]
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    Volatility

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    指一种衡量股票价格变化剧烈程度的指标,一般用百分数表示。股价波动率与认购期权、认沽期权价值均为正相关关系。[/li]
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    波幅

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    指一种测定价格上下波动程度的指标,通常用同一对象市场价格波动的最高点与其最低点的差额来表示。[/li]
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    Black-Scholes模型

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    又称B-S模型,是1973年由两位经济学家BLACK、SCHOLES提出的、对欧式期权进行定价的公式,对衍生金融工具的合理定价奠定了基础。 曾获诺贝尔经济学奖。[/li]
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    场内期权

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    指在交易所挂牌上市的标准化期权合约。[/li]
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    场外期权

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    指交易双方达成的非标准化期权合约。[/li]
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    垂直价差策略(Vertical Spread)

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    指买入一个期权的同时卖出一个期权,这两个期权具有相同合约标的和相同到期日,但具有不同的行权价。[/li]
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    场内期权

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    指在交易所挂牌上市的标准化期权合约。[/li]
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    场外期权

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    指交易双方达成的非标准化期权合约。[/li]
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    垂直价差策略(Vertical Spread)

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    指买入一个期权的同时卖出一个期权,这两个期权具有相同合约标的和相同到期日,但具有不同的行权价。[/li]
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